Mary Washington

Mary Washington may refer to:
 * Mary L. Washington (born 1962), Maryland legislator
 * Mary Ball Washington (1708–1789), mother of U.S. President George Washington
 * University of Mary Washington, Fredericksburg, Virginia, named after Mary Ball Washington
 * Mary Helen Washington, American literary scholar
 * Mary T. Washington (1906–2005), first African-American woman to be a certified public accountant in the United States
 * Mary Burke Washington (1926–2014), American economist